[Qemu-block] Failing QEMU iotest 175

[Thomas Huth]

QEMU iotest 175 is failing for me when I run it with -raw:

$ ./check -raw 175
QEMU          --
"/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../x86_64-softmmu/qemu-system-x86_64"
-nodefaults -machine accel=qtest
QEMU_IMG      --
"/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-img"
QEMU_IO       --
"/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-io"  --cache
writeback -f raw
QEMU_NBD      --
"/home/thuth/tmp/qemu-build/tests/qemu-iotests/../../qemu-nbd"
IMGFMT        -- raw
IMGPROTO      -- file
PLATFORM      -- Linux/x86_64 thuth 3.10.0-957.10.1.el7.x86_64
TEST_DIR      -- /home/thuth/tmp/qemu-build/tests/qemu-iotests/scratch
SOCKET_SCM_HELPER --
/home/thuth/tmp/qemu-build/tests/qemu-iotests/socket_scm_helper

175         - output mismatch (see 175.out.bad)
--- /home/thuth/devel/qemu/tests/qemu-iotests/175.out   2019-04-23
16:43:12.000000000 +0200
+++ /home/thuth/tmp/qemu-build/tests/qemu-iotests/175.out.bad   2019-04-28
17:17:32.000000000 +0200
@@ -2,17 +2,17 @@

 == creating image with default preallocation ==
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
-size=1048576, blocks=0
+size=1048576, blocks=2

 == creating image with preallocation off ==
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 preallocation=off
-size=1048576, blocks=0
+size=1048576, blocks=2

 == creating image with preallocation full ==
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 preallocation=full
-size=1048576, blocks=2048
+size=1048576, blocks=2050

 == creating image with preallocation falloc ==
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
preallocation=falloc
-size=1048576, blocks=2048
+size=1048576, blocks=2050
  *** done
Failures: 175
Failed 1 of 1 tests

Any ideas how to fix this?

 Thomas